如何使用C＃将WAV文件拆分为两个或更多部分

Question

下面的代码用于在按钮click事件中将600mb的音频WAV文件拆分为两个部分。

protected void Button1_Click(object sender, EventArgs e)
{
string inputFile = Server.MapPath("~/inputPath/BetterFasterCheaperGovt-HD+720p.wav"); // Substitute this with your Input File 
    FileStream fs = new FileStream(inputFile, FileMode.Open, FileAccess.Read);
    int numberOfFiles = 2;
    int sizeOfEachFile = (int)Math.Ceiling((double)fs.Length / numberOfFiles);
    for (int i = 1; i <= numberOfFiles; i++)
    {
        string baseFileName = Path.GetFileNameWithoutExtension(inputFile);
        string extension = Path.GetExtension(inputFile);
        FileStream outputFile = new FileStream(Path.GetDirectoryName(inputFile) + "\\" + baseFileName + "_" + i.ToString().PadLeft(3, Convert.ToChar("0")) + extension, FileMode.Create, FileAccess.Write);
        int bytesRead = 0;
        byte[] buffer = new byte[sizeOfEachFile];
        if ((bytesRead = fs.Read(buffer, 0, sizeOfEachFile)) > 0)
        {
            outputFile.Write(buffer, 0, bytesRead);
        }
        outputFile.Close();
    }
    fs.Close();
    ClientScript.RegisterStartupScript(this.GetType(), "popup", "alert('success');", true);
}

它成功地分成两个文件，每个文件大小相同，即300mb，但是part1.wmv为300mb，显示长度为1hr 16min part2.wmv为300mb，长度为0。

意味着part2.wav中没有音频，只会创建空白损坏的文件。

请帮助我解决问题。 谢谢！！

Answer 1

看一下Windows Media Encoder SDK 。 像这样：

Int32 StartTime = 0;
Int32 EndTime = 76 * 1000; //1hr 16min
String SourceName = "original.mp3";
String DestinationName = "newsplit.mp3";
WMEncBasicEdit SplitFile = new WMEncBasicEdit();
SplitFile.MediaFile = SourceName;
SplitFile.OutputFile = DestinationName;
SplitFile.MarkIn = StartTime;
SplitFile.MarkOut = EndTime;
SplitFile.Start();